The Pho1 phosphate permease family
TC# 2.A.94 is a family of
phosphate transporter Phosphate permeases are membrane transport proteins that facilitate the diffusion of phosphate into and out of a cell or organelle. Some of these families include:
TC# 2.A.1.4Organophosphate:Pi Antiporter (OPA) Family (i.e., Pho-84 of ''Neurospora c ...
s belonging to the
ion transporter (IT) superfamily. Representative members of the Pho1 family include the putative phosphate transporter PHO1 of ''
Arabidopsis thaliana
''Arabidopsis thaliana'', the thale cress, mouse-ear cress or arabidopsis, is a small flowering plant native to Eurasia and Africa. ''A. thaliana'' is considered a weed; it is found along the shoulders of roads and in disturbed land.
A winter a ...
''
TC# 2.A.94.1.1, and the
xenotropic and polytropic murine-leukemia virus receptor Xpr1 of ''
Culex pipiens''
TC# 2.A.94.1.2.
Pho1
Pho1 of ''
A. thaliana
''Arabidopsis thaliana'', the thale cress, mouse-ear cress or arabidopsis, is a small flowering plant native to Eurasia and Africa. ''A. thaliana'' is considered a weed; it is found along the shoulders of roads and in disturbed land.
A winter a ...
'' is a member of the PHO1 family (11 paralogues in ''A. thaliana''). This protein is 782 amino acyl residues in length and possesses 7 transmembrane segments (TMSs). It functions in
inorganic phosphate transport and homeostasis. Pho1 catalyzes efflux of phosphate from
epidermal
The epidermis is the outermost of the three layers that comprise the skin, the inner layers being the dermis and hypodermis. The epidermis layer provides a barrier to infection from environmental pathogens and regulates the amount of water relea ...
and cortical cells into the
xylem. The SPX superfamily domain is an N-terminal soluble domain. These proteins belong to the EXS (Erd1/Xpr1/Syg1) superfamily.
The generalized reaction catalyzed by Pho1 is:
Pi (cells) → Pi (xylem)
See also
*
Phosphate permease Phosphate permeases are membrane transport proteins that facilitate the diffusion of phosphate into and out of a cell or organelle. Some of these families include:
TC# 2.A.1.4Organophosphate:Pi Antiporter (OPA) Family (i.e., Pho-84 of ''Neurospora c ...
*
Ion transporter superfamily
*
Inorganic phosphate
*
Transporter Classification Database
Further reading
* EMBL-EBI, InterPro
"Phosphate permease (IPR004738) < InterPro < EMBL-EBI" ''www.ebi.ac.uk''. Retrieved 2016-03-03.
"pho-4 - Phosphate-repressible phosphate permease pho-4 - Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) - pho-4 gene & protein" ''www.uniprot.org''. Retrieved 2016-03-03.
* Versaw, W. K. (1995-02-03)
"A phosphate-repressible, high-affinity phosphate permease is encoded by the pho-5+ gene of Neurospora crassa" ''Gene'' 153 (1): 135–139.
ISSN
An International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine. The ISSN is especially helpful in distinguishing between serials with the same title. ISSNs ...
&nbs
0378-1119 PMID&nbs
7883177
* Ramaiah, Madhuvanthi; Jain, Ajay; Baldwin, James C.; Karthikeyan, Athikkattuvalasu S.; Raghothama, Kashchandra G. (2011-09-01)
"Characterization of the phosphate starvation-induced glycerol-3-phosphate permease gene family in Arabidopsis" ''Plant Physiology''157 (1): 279–291.
doi:
10.1104/pp.111.178541.
ISSN
An International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine. The ISSN is especially helpful in distinguishing between serials with the same title. ISSNs ...
&nbs
1532-2548 PMC&nbs
3165876 PMID&nbs
21788361
* Stakheev, A. A.; Khairulina, D. R.; Ryazantsev, D. Yu; Zavriev, S. K. (2013-03-22)
"Phosphate permease gene as a marker for the species-specific identification of the toxigenic fungus Fusarium cerealis" ''Russian Journal of Bioorganic Chemistry'' 39 (2): 153–160.
doi:
10.1134/S1068162013020131.
ISSN
An International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine. The ISSN is especially helpful in distinguishing between serials with the same title. ISSNs ...
&nbs
1068-1620
References
Protein families
Solute carrier family
{{membrane-protein-stub